| ; RUN: llc < %s -mtriple=x86_64-apple-darwin -print-machineinstrs=expand-isel-pseudos -o /dev/null 2>&1 | FileCheck %s |
| |
| ;; Make sure a transformation in SelectionDAGBuilder that converts "or + br" to |
| ;; two branches correctly updates the branch probability. |
| |
| @max_regno = common global i32 0, align 4 |
| |
| define void @test(i32* %old, i32 %final) { |
| for.cond: |
| br label %for.cond2 |
| |
| for.cond2: ; preds = %for.inc, %for.cond |
| %i.1 = phi i32 [ %inc19, %for.inc ], [ 0, %for.cond ] |
| %bit.0 = phi i32 [ %shl, %for.inc ], [ 1, %for.cond ] |
| %tobool = icmp eq i32 %bit.0, 0 |
| %v3 = load i32, i32* @max_regno, align 4 |
| %cmp4 = icmp eq i32 %i.1, %v3 |
| %or.cond = or i1 %tobool, %cmp4 |
| br i1 %or.cond, label %for.inc20, label %for.inc, !prof !0 |
| ; CHECK: BB#1: derived from LLVM BB %for.cond2 |
| ; CHECK: Successors according to CFG: BB#3({{[0-9a-fx/= ]+}}1.53%) BB#4({{[0-9a-fx/= ]+}}98.47%) |
| ; CHECK: BB#4: derived from LLVM BB %for.cond2 |
| ; CHECK: Successors according to CFG: BB#3({{[0-9a-fx/= ]+}}1.55%) BB#2({{[0-9a-fx/= ]+}}98.45%) |
| |
| for.inc: ; preds = %for.cond2 |
| %shl = shl i32 %bit.0, 1 |
| %inc19 = add nsw i32 %i.1, 1 |
| br label %for.cond2 |
| |
| for.inc20: ; preds = %for.cond2 |
| ret void |
| } |
| |
| !0 = !{!"branch_weights", i32 112017436, i32 -735157296} |
